Volume 22, Issue 64 (4-2022)                   jgs 2022, 22(64): 17-30 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

parsamehr Y, mohammadi H, khoshakhlagh F, bazgeer S. Estimation of base temperature in different growth stages of wheat Case study: Sararood Station of Kermanshah. jgs 2022; 22 (64) :17-30
URL: http://jgs.khu.ac.ir/article-1-3142-en.html
1- Agroclimatology
2- Agroclimatology , hmmohammadi@ut.ac.ir
3- Synoptic climatology
4- AgroMeteorology
Abstract:   (3805 Views)
In this study, in order to study the base temperature (minimum temperature for plant growth) at the degree of growth day (GDD), which is one of the important parameters in calculating the degree of growth day, first, the data required for the 2009-2017 statistical period of wheat production at the station Sararood was taken from the station. Then, after sorting and separating growth different stages, using four methods of calculating the base temperature (1 - minimum standard deviation SDgdd day, 2 - minimum standard deviation SDAY days, 3 - regression coefficient per day CRday, 4 - CV coefficient of variation) was the most suitable method for calculating the base temperature of growth in different stages of planting to wheat harvesting. The results showed that the most suitable method is the minimum standard deviation in GDD, which The base temperature was obtained from germination to full reach for different growth stages, 5/8, 0/38, 1/8, 2/6, 0/63, 2, 3/7, 9/7, 8/6, 11 degrees Celsius. By comparing different methods of calculating GDD, the most appropriate of method was the general method of calculating the degree of growth day due to the most of similarity to the station data. The degree of growth day in different stages was calculated based on their base temperature and the results showed that the calculation of the base temperature at each stage of the growth of the wheat was very accurate for GDD calculation and a precise estimate of GDD was obtained.
Full-Text [PDF 698 kb]   (1285 Downloads)    
Type of Study: Applicable | Subject: climatology
Received: 2018/09/16 | Accepted: 2019/05/10

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | Journal of Applied researches in Geographical Sciences

Designed & Developed by : Yektaweb